The scams wouldn't even be a problem - every fledgling platform has them - but the fact that the crypto community embraces scams and even encourages them. Scammers can rug a project for millions and turn around and launch another project within a week and everyone will still buy it because of greed.
And this is the crypto dilemma: the crypto community has utterly failed at self-regulation. Ergo, it has to be regulated by the government. However, a cryptocurrency that's beholden to government rules is antithetical to the core crypto ideas of self-ownership, privacy, and freedom.